Psionic Shot( Psionics Handbook 3.0, p. 50)
You can charge your ranged attacks with additional damage potential.
Point Blank Shot (PH) , DEX 13,
Your ranged shots deal +1d4 points of piercing damage when you pay the cost of 1 power point. You must decide whether or not to pay the cost prior to making the ranged attack. Your arrow, bolt, or bullet remains "charged" for a maximum number of rounds equal to your Strength modifier + 1, or until you make your next attack, whichever occurs first. If your attack misses, the power point expenditure is wasted.